But it’s the wrong approach. Sleep has a huge effect on how you feel throughout the day, and nutrition plays a role in how well you sleep. Food relates directly to serotonin, a key hormone that — along with Vitamin B6, B12, and folic acid — helps promote healthy sleep. Try to consume foods that calm the body, increase serotonin levels and get you ready for restful sleep.

Here are a few foods to get you started on the path to slumber.

1. Complex carbohydrates

Embrace whole-grain breads, cereals, pasta, crackers and brown rice. Avoid simple carbohydrates, including breads, pasta and sweets such as cookies, cakes, pastries and other sugary foods. These tend to reduce serotonin levels and do not promote sleep.

2. Lean proteins

Lean proteins include low-fat cheese, chicken, turkey and fish. These foods are high in the amino acid tryptophan, which tends to increase serotonin levels. On the flipside, avoid high-fat cheeses, chicken wings or deep-fried fish. These take longer to digest and can keep you awake.

Unsaturated fats will not only boost your heart health but also improve your serotonin levels. Examples include peanut butter (read the label to make sure peanuts are the only ingredient) and nuts such as walnuts, almonds, cashews and pistachios. Avoid foods with saturated and trans fats, such as french fries, potato chips or other high-fat snack foods. These bring your serotonin levels down.

4. Beverages

Certain drinks can promote or prevent sleep. A good, soothing beverage to drink before bedtime would be warm milk (your mother was right) or herbal tea such as chamomile or peppermint. As for caffeinated drinks, I recommend that my clients who are having difficulty sleeping consume that last cup by 2 p.m. Caffeine can affect people differently, and even the smallest amount of stimulant can keep you awake.

5. Fresh herbs

Fresh herbs can have a calming effect on the body. For example, sage and basil contain chemicals that reduce tension and promote sleep. Try making your own homemade pasta sauce with sage and basil. It’s easy to do, and homemade sauces tend to be lower in sugar than store-bought versions. However, avoid herbs such as red pepper or black pepper at night, as they have a stimulatory effect.